EP0321705B1 - Méthode pour saisir des données sismiques - Google Patents

Méthode pour saisir des données sismiques Download PDF

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Publication number
EP0321705B1
EP0321705B1 EP88119283A EP88119283A EP0321705B1 EP 0321705 B1 EP0321705 B1 EP 0321705B1 EP 88119283 A EP88119283 A EP 88119283A EP 88119283 A EP88119283 A EP 88119283A EP 0321705 B1 EP0321705 B1 EP 0321705B1
Authority
EP
European Patent Office
Prior art keywords
spiral
radial
seismic data
ship
data
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP88119283A
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German (de)
English (en)
Other versions
EP0321705A3 (fr
EP0321705A2 (fr
Inventor
Roland Dr. Dipl.-Ing. Marschall
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Geco Prakla GmbH
Original Assignee
Prakla Seismos GmbH
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Filing date
Publication date
Application filed by Prakla Seismos GmbH filed Critical Prakla Seismos GmbH
Publication of EP0321705A2 publication Critical patent/EP0321705A2/fr
Publication of EP0321705A3 publication Critical patent/EP0321705A3/fr
Application granted granted Critical
Publication of EP0321705B1 publication Critical patent/EP0321705B1/fr
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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
    • G01V1/38—Seismology; Seismic or acoustic prospecting or detecting specially adapted for water-covered areas
    • G01V1/3808—Seismic data acquisition, e.g. survey design

Definitions

  • the invention relates to a method for acquiring seismic data of an area having a central structure according to the preamble of claim 1.
  • Marine seismic data is mainly collected by streamers towed behind ships.
  • the ship is preferably guided in parallel courses over the area to be covered. At the respective ends of a route, the ship is then led around in an arc and guided at a distance parallel to the previously driven course in the opposite direction over the area to be recorded.
  • the method shown is only intended for the acquisition of a large contiguous area and enables the avoidance of reversal routes which do not contribute to the data acquisition.
  • the "surface seismic” shown can then no longer be used if obstacles, such as islands, prevent the detection of a coherent area. However, the immediate area around a very small island can be of particular importance for seismic surveys.
  • the invention is therefore based on the object of specifying a method for acquiring seismic data of an area which has a central structure, enables data acquisition adapted to the structure and simple evaluation of the acquired data, and is simple to carry out, without having to travel on routes that do not contribute to the desired data volume.
  • the invention is particularly suitable for seismic data acquisition around central structures of an object, such as. B. small islands, existing salt fingers in the underground or similar punctiform structures.
  • the data acquisition takes place essentially polar by following a spiral course, so that with 3D acquisition, starting from the central structure, vertical sections can be obtained in any desired azimuthal direction. In this way, a high data density can be obtained for the central structure, which would not be achievable in any other way.
  • a spiral course is chosen in which the radial distance between the spiral lines is constant according to an Archimedean spiral.
  • the figure shows a central structure in a marine area, e.g. B. an island whose flank structure is to be detected.
  • Structures occur in certain marine areas, e.g. B. appear as small islands or protrude finger-shaped from deeper underground layers. Area coverage using conventional streamer technology is only possible if the structures end below the water surface. From a 3D data volume produced in this way, vertical sections can also be created as radial sections based on the structure, but this requires a considerable amount of computation. If the structure emerges from the water as an island, a sufficiently precise detection of the flanks of the structure is not readily possible.
  • a spiral course is selected for the ship towing the streamer.
  • the ship can be led from a point of departure to an end point over a large area without having to take reverse courses.
  • the method according to the invention is based on data acquisition during a revolution around a structure, it can be used with advantage particularly for central structures.
  • a spiral course is selected according to the invention, the spiral of which, in a special embodiment of the invention, is an Archimedean spiral. This is characterized in that the distance between adjacent spiral lines is constant over the entire circumference.
  • the intersections of the radial line with the spiral lines are distributed equidistantly. This distribution applies to all radial lines.
  • the arc length of the spiral determines the number of halftone dots while the streamer rotates around the structure.
  • the figure shows the principle of the invention.
  • a central structure for. B. an island, a spiral line 2, whose origin 3 is located approximately in the center of the structure. Since an Archimedean spiral is used, the distances between the individual spiral line sections, e.g. B. between sections 7, 8 and 9 equidistant.
  • the radial line 6 therefore intersects the spiral line at equal intervals 5 to the end point 4 of the spiral line 2.
  • the size of the structure 1 means that seismic detection using a towed streamer is only possible on the spiral line sections 7, 8 and 9.
  • the distance of the spiral line is preferably chosen to be less than 50 m in order to enable a sufficiently dense data acquisition.
  • the end radius of the spiral line depends on the type of structure detected, the depth to be detected and the radial spread of the structure in the subsurface.
  • the method according to the invention enables a fast, accurate, particularly meaningful acquisition of seismic data around a central structure.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Geology (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Environmental & Geological Engineering (AREA)
  • Oceanography (AREA)
  • Remote Sensing (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Photoreceptors In Electrophotography (AREA)
  • Communication Cables (AREA)

Claims (4)

  1. Procédé pour saisir des données sismiques d'une zone présentant une structure centrale (1), à l'aide d'une flûte marine traînée par un navire, caractérisé en ce que pour la saisie des données, le navire décrit une route en spirale (2), le centre de la spirale de celle-ci formant la structure centrale.
  2. Procédé selon la revendication 1, caractérisé en ce que la spirale (2) est une spirale d'Archimède avec un écartement radial constant entre des segments de spirale voisins (7, 8, 9).
  3. Procédé selon la revendication 1 ou 2, caractérisé par l'utilisation, pour la détection d'un volume de données en trois dimensions, de la zone contenant la structure centrale.
  4. Procédé selon la revendication 3, caractérisé en ce que des sections radiales partant de la structure centrale sont déduites des volumes de données en trois dimensions.
EP88119283A 1987-12-12 1988-11-21 Méthode pour saisir des données sismiques Expired - Lifetime EP0321705B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3742528 1987-12-12
DE19873742528 DE3742528A1 (de) 1987-12-12 1987-12-12 Verfahren zur erfassung seismischer daten

Publications (3)

Publication Number Publication Date
EP0321705A2 EP0321705A2 (fr) 1989-06-28
EP0321705A3 EP0321705A3 (fr) 1991-06-26
EP0321705B1 true EP0321705B1 (fr) 1993-02-17

Family

ID=6342674

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88119283A Expired - Lifetime EP0321705B1 (fr) 1987-12-12 1988-11-21 Méthode pour saisir des données sismiques

Country Status (3)

Country Link
EP (1) EP0321705B1 (fr)
DE (2) DE3742528A1 (fr)
NO (1) NO171135C (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7466632B1 (en) 2004-05-04 2008-12-16 Westerngeco L.L.C. Method and apparatus for positioning a center of a seismic source
US8230801B2 (en) 1998-01-10 2012-07-31 Westerngeco L.L.C. Control system for positioning of marine seismic streamers
US8792297B2 (en) 2010-07-02 2014-07-29 Pgs Geophysical As Methods for gathering marine geophysical data
US8824239B2 (en) 2004-03-17 2014-09-02 Westerngeco L.L.C. Marine seismic survey method and system
US9696446B2 (en) 2003-04-15 2017-07-04 Westerngeco L.L.C. Active steering for marine seismic sources

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6671223B2 (en) 1996-12-20 2003-12-30 Westerngeco, L.L.C. Control devices for controlling the position of a marine seismic streamer
US7415936B2 (en) 2004-06-03 2008-08-26 Westerngeco L.L.C. Active steering for marine sources
US7450467B2 (en) 2005-04-08 2008-11-11 Westerngeco L.L.C. Apparatus and methods for seismic streamer positioning
US7400552B2 (en) 2006-01-19 2008-07-15 Westerngeco L.L.C. Methods and systems for efficiently acquiring towed streamer seismic surveys
CN101680961A (zh) * 2007-05-17 2010-03-24 格库技术有限公司 用于有效获取宽方位角被拖曳拖缆地震数据的方法
US8488409B2 (en) 2007-05-17 2013-07-16 Westerngeco L.L.C. Acquiring azimuth rich seismic data in the marine environment using a regular sparse pattern of continuously curved sail lines
US8681580B2 (en) 2008-05-15 2014-03-25 Westerngeco L.L.C. Multi-vessel coil shooting acquisition
US9857491B2 (en) 2008-05-15 2018-01-02 Westerngeco L.L.C. Multi-vessel coil shooting acquisition
US8724426B2 (en) 2008-06-03 2014-05-13 Westerngeco L.L.C. Marine seismic streamer system configurations, systems, and methods for non-linear seismic survey navigation
US9594181B2 (en) 2008-06-13 2017-03-14 Westerngeco L.L.C. Filtering and presentation of heading observations for coil shooting
US9052411B2 (en) 2008-06-13 2015-06-09 Westerngeco L.L.C. Method to determine the deviation of seismic equipment from a planned curved path
US8483008B2 (en) 2008-11-08 2013-07-09 Westerngeco L.L.C. Coil shooting mode
US8711654B2 (en) 2009-12-30 2014-04-29 Westerngeco L.L.C. Random sampling for geophysical acquisitions
US8681581B2 (en) 2009-12-30 2014-03-25 Westerngeco L.L.C. Randomization of data acquisition in marine seismic and electromagnetic acquisition
RU2457517C2 (ru) * 2011-04-13 2012-07-27 Владимир Иванович Лунев Способ поиска месторождения полезного ископаемого
US9103942B2 (en) 2011-10-28 2015-08-11 Westerngeco L.L.C. Methods and systems for survey designs
US9423519B2 (en) 2013-03-14 2016-08-23 Pgs Geophysical As Automated lateral control of seismic streamers
CN120085371A (zh) * 2025-05-06 2025-06-03 中国石油集团东方地球物理勘探有限责任公司 一种海洋拖缆螺旋观测采集方法、装置、设备及存储介质

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3781776A (en) * 1972-05-22 1973-12-25 Us Navy Solid state high speed scanning compensator switch for sonar
US3921124A (en) * 1974-03-18 1975-11-18 Continental Oil Co Marine 3-D seismic method using source position control
US4486863A (en) * 1983-08-11 1984-12-04 Tensor Geophysical Service Corporation Circular seismic acquisition system
ZA845569B (en) * 1984-07-19 1986-04-30 Geophex Pty Ltd A method of contouring a geological surface using seismic techniques

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8230801B2 (en) 1998-01-10 2012-07-31 Westerngeco L.L.C. Control system for positioning of marine seismic streamers
US9696446B2 (en) 2003-04-15 2017-07-04 Westerngeco L.L.C. Active steering for marine seismic sources
US10234587B2 (en) 2003-04-15 2019-03-19 Westerngeco Llc Active steering for marine seismic sources
US8824239B2 (en) 2004-03-17 2014-09-02 Westerngeco L.L.C. Marine seismic survey method and system
US7466632B1 (en) 2004-05-04 2008-12-16 Westerngeco L.L.C. Method and apparatus for positioning a center of a seismic source
US8547785B2 (en) 2004-05-04 2013-10-01 Westerngeco L.L.C. Method and apparatus for positioning a center of a seismic source
US8792297B2 (en) 2010-07-02 2014-07-29 Pgs Geophysical As Methods for gathering marine geophysical data

Also Published As

Publication number Publication date
NO171135C (no) 1993-01-27
EP0321705A3 (fr) 1991-06-26
DE3878543D1 (de) 1993-03-25
DE3742528A1 (de) 1989-06-22
NO885425L (no) 1989-06-13
EP0321705A2 (fr) 1989-06-28
NO885425D0 (no) 1988-12-06
NO171135B (no) 1992-10-19

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